%I #5 Mar 30 2012 18:56:53
%S 0,0,0,0,0,4,10,30,60,121,217,385,700,1260,2521,4711,9940,18340,38500,
%T 68772,142833,250185,523965,914485,1950949,3405402,7357416,12788516,
%U 27747356,47902764,104171886,178864378,390678883,668688388
%N Number of nonempty subsets of {1,2,...,n} in which exactly 2/5 of the elements are <= (n-2)/2.
%K nonn
%O 1,6
%A _Clark Kimberling_
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